print elements of cell array to file

Hi there,

I have the following cell array.

f={[1;2;3;4] [5;6;7;8;9;10;11] [12;13;14;15;16;17;18;19;20;21;22;23]}

I want the output to be written to a file and it should look like....

set1

1, 2, 3, 4

set2

5, 6, 7, 8, 9

10, 11

set3

12, 13, 14, 15, 16

17, 18, 19, 20, 21

22, 23

as you can see the set number refers to the row number of cell array {f}. Also when printing the number to file, each line can have a maximum of 5 values so if you have more than 5, it continues from next line.

Thanks for your help in advance. Let me know if further clarification is needed.

Mohan

Answer 1

[Sathish Kumar]

Hai, try the one below....any doubts on the steps just comment on it....

      f={[1;2;3;4] [5;6;7;8;9;10;11] [12;13;14;15;16;17;18;19;20;21;22;23]};
  s=size(f,2);
  myfile=fopen('filename.txt','w');
  for i=1:3
      a=cell2mat(f(i));
      fprintf(myfile,'set%d\n',i);
      sa=size(a,1);
      for j=1:sa
          fprintf(myfile,'%d   ',a(j));
          if mod(j,5)==0
              fprintf(myfile,'\n');

    end
    fprintf(myfile,'\n');
end
fclose(myfile);

end

[mohan]

Hi Sathish

I tried your code, it seems to be complaining at line fprintf(myfile,'set%d\n',i). Matlab says '??? Error using ==> fprintf Invalid file identifier. Use fopen to generate a valid file identifier.'. I've tried different file identifiers but same message.

Thanks

Mohan

[mohan]

Hi

I got it to work by modifying your code as shown below. But I'm struggling to get it to write only 5 variables on a line. Also this modified code prints a comma even for the last variable as well, which is not required.

f={[1;2;3;4] [5;6;7;8;9;10;11] [12;13;14;15;16;17;18;19;20;21;22;23]};
  s=size(f,2);
  fileID=fopen('filename.txt','w');
  for i=1:3
      a=cell2mat(f(i));
      fprintf(fileID,'set%d\n',i);
      sa=size(a,1);
%      for j=1:sa
          fprintf(fileID,'%d,   ',f{i});
%          if mod(j,5)==0
%             fprintf(fileID,'\n');
%          end
          fprintf(fileID,'\n');
%      end
  end
fclose(fileID);

Mohan

[mohan]

here is the correct code for anyone interested.....

f={[1;2;3;4] [5;6;7;8;9;10;11] [12;13;14;15;16;17;18;19;20;21;22;23]};
  s=size(f,2);
  fileID=fopen('filename.txt','w');
  for i=1:s
      a=cell2mat(f(i));
      fprintf(fileID,'set%d\n',i);
      sa=size(a,1);
      for j=1:sa
          if (j ~= sa)
          fprintf(fileID,'%d,',a(j));
          else
          fprintf(fileID,'%d',a(j));
          end
          if mod(j,5)==0
             fprintf(fileID,'\n');
          end
      end
           fprintf(fileID,'\n');
  end
fclose(fileID);